The site above is by a vet who counsels on what drool means in healthy and unhealthy cats. Frankly, though, I never realized that cats drooled until my sister told me. She specializes in cats and I specialized in dogs until the past year. So much of what I know is from resources like my sister, messybeast and massive amounts of remedial reading. But I must admit I feel right at home with the idea of drooling cats.